From: Markus <markus@...>
Date: 2004-10-02T00:16:57+09:00
Subject: Re: Range syntax theory

On Fri, 2004-10-01 at 06:16, trans. (T. Onoma) wrote:
> On Friday 01 October 2004 09:02 am, Michael Gaunnac wrote:
> > I don't know about potential parsing problems (or ugliness), but what
> > about:
> >
> >
> > 0..5  inclusive
> > 0..<5 exclusive
> 
> Ha!
> 
>   0><5
>   0><=5
>   0=><=5

     Thank you!  In my free time (ha!) I'm working on a patch to 1.8.2
to allow these sorts of operators (see
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/111627,
towards the end, and follow ups).

     If I get it working, I'll try to implement this as an example.

         -- Markus

P.S. My patch sort of works at present; bringing together a half dozen
threads on this list it'd call it alpheta, where:

      alpheta = Proc.new(:===) { |s| (alpha...beta).member? s }